SEATTLE (AP) — The Federal Aviation Administration said Monday it has opened an investigation into Boeing after the beleaguered company reported that workers at a South Carolina plant falsified inspection records on certain 787 planes. Boeing said its engineers have determined that misconduct did not create “an immediate safety of flight issue.” In an email to Boeing's South Carolina employees on April 29, Scott Stocker, who leads the 787 program, said a worker observed an “irregularity” in a re